In the microscope, the eyepiece lens merely acts as?
Short sightedness can be corrected by what type of lens?
A short chain is sometimes attached to the back of a petrol tanker to?
An electric generator has e.m.f. of 240 V and an internal resistance of 1Ω if the current supplied by the generator is 20A when the terminal voltage is 220 V, find the ratio of the power supplied to the power dissipated?
A generator is on daily use and in the process, ten 60 W and five 40 W tungsten bulbs are on for the same time interval. the energy consumed daily is?
